1. Database
    1. DBMS
      1. SQLite
        1. Interfaces
          1. SQLite browser
        2. ORM
          1. Android
          2. ORMLite
          3. GreenDAO
          4. iOS
          5. CoreData
        3. Plain SQL
      2. MySQL
        1. Indexes
          1. Foreign Keys
          2. PRIMARY KEY
          3. UNIQUE
          4. INDEX
          5. FULLTEXT
        2. Common
          1. Connect
          2. Export/Import
        3. Storage Engines
          1. MyISAM
          2. InnoDB
          3. HEAP
        4. Interfaces
          1. PhpMyAdmin (web)
          2. Sequel Pro (mac os)
      3. PostgresSQL
      4. SQL (Oracle, Microsoft)
      5. MongoDB
    2. Data types
    3. Join
    4. Subquery
    5. VIEW
    6. PARTITION
  2. git
    1. files
      1. .gitignore
      2. .gitkeep
    2. commands
      1. common
        1. init
        2. add
        3. commit
        4. pull
        5. push
      2. additional
        1. checkout
        2. branch
        3. reset
    3. gitlab
      1. API
    4. git-flow
    5. submodule
  3. Scripting
    1. bash
      1. Common commands
      2. editors
    2. Windows batch scripting
    3. Python
  4. HTML
  5. Cross-platform
    1. Phonegap
      1. HTML5
      2. CSS3
    2. Xamarin
      1. C# .NET
    3. Corona SDK
      1. Lua
  6. Android
    1. IDE
      1. Android Studio
      2. Eclipse
      3. NetBeans
    2. Java
      1. Android SDK
      2. Core
        1. Polymorphism
        2. Inheritance
        3. Threads
        4. Data structures
        5. Exception handling
        6. File I/O
    3. XML
      1. Basics
    4. Junior
      1. Activity lifecycle
      2. Basic views
        1. Containers
          1. LinearLayout
          2. RelativeLayout
          3. FrameLayout
          4. ScrollView
          5. GridLayout
        2. TextView
        3. EditText
        4. Button
        5. CheckBox
        6. ImaveView
        7. ListView
          1. ViewHolder pattern
        8. ProgressBar
      3. Network requests
        1. Asynchronous
          1. Async tasks
        2. Synchronous
          1. Threads
      4. DB
        1. CRUD
    5. Middle
      1. Fragments
        1. Fragments lifecycle
        2. Nested
      2. Views
        1. Spinner
        2. WebView
        3. ExpandableListView
        4. TabHost
        5. AutoCompleteTextView
        6. DatePicker
        7. ViewPager
        8. Sliding menu
      3. Support library
        1. v4
        2. v7
      4. DB
        1. Migrations
        2. Managing DB connections
        3. Complex queries
      5. Maps
        1. Google
          1. Marker
          2. Overlay
        2. Yandex
          1. Marker
          2. Overlay
      6. Audio
        1. Play
        2. Stop
      7. Video
        1. Play
        2. Stop
      8. Services
        1. Intent
        2. AIDL
      9. Publish to playmarket
      10. Libraries
        1. Project libraries (submodules)
        2. JSON
          1. GSON
          2. Jackson
        3. Network
          1. Volley
          2. Ok Http
          3. Retrofit
        4. Crouton
        5. Image loading
          1. Picasso
          2. Universal Image loader
        6. Animation
          1. Nine old androids
      11. Location services
      12. Internationalisation
      13. Different layouts
      14. ADB
      15. Custom theme
      16. Push notifications
        1. GCM service
      17. Social API
        1. Facebook
        2. Google Plus
        3. Linkedin
        4. Twitter
      18. XML Manipulation
    6. Senior
      1. DB
        1. ORM's
          1. ORM Lite
          2. Green DAO
      2. Expert views
        1. Custom view
      3. Services
        1. AIDL
      4. WebView
        1. Custom JS interfaces
        2. Custom pages
        3. Managing navigation between pages
      5. Build scripts
        1. Gradle
        2. Maven
      6. Annotations
        1. Dependency Injection
          1. Dagger
          2. Butterknife
          3. RoboJuice
      7. Testing
        1. UI
          1. Espresso
          2. Robotium
        2. Unit
          1. Robolectric
          2. JUnit
          3. Robospock
      8. Sockets
      9. Graphics
        1. Open GL
      10. Shell scripting
      11. NDK
      12. Content provider
      13. Video
        1. Capture
        2. Transform
        3. Overlay
      14. Publish to alternative markets
        1. Yandex
        2. Amazon
      15. CI
        1. Gitlab
        2. Jenkins
        3. Team City
      16. Cryptography
        1. MD5
        2. SHA1
        3. AES
      17. Patterns
      18. Web Services
        1. RESTful
      19. Protocols
        1. HTTP
        2. XML-RPC
        3. SMTP
        4. OAuth2
        5. SSH
        6. SOAP
        7. TCP/IP
        8. SSL
        9. HTTPS
      20. OCR
        1. Open CV
      21. Render script
      22. Payment System
        1. PayPal
        2. Webmoney
        3. Robokassa
        4. Bank transfer
      23. Augmented reality
        1. Unity 3D
        2. AndAR
        3. Vuforia
      24. AOSP customization
      25. Root access
  7. iOS
    1. IDE
      1. XCode
      2. AppCode
    2. Objective C
    3. Swift
    4. Junior
      1. MVC pattern
      2. View controller life cycle
      3. Basic Views
        1. Controllers
          1. View Controller
          2. Navigation Controller
          3. Table View Controller
        2. UILabel
        3. Button
        4. Text Field
        5. Switch
        6. Activity indicator view
        7. Image View
        8. Scroll View
      4. XIB files
      5. Storyboard
        1. Segue
        2. View Controllers
      6. Network requests
        1. Asynchronous
          1. AFNetworking
        2. Synchronous
          1. NSURLConnection
      7. DB
        1. CRUD
        2. Core Data basics
      8. Local notifications
        1. Subscribe
        2. Send
      9. Image assets
    5. Middle
      1. Push notifications
      2. Internationalisation
      3. Location services
      4. Auto layout
      5. Pods
      6. Publishing
        1. Appstore
        2. Testflight
      7. Libraries
        1. JSON
          1. Touch JSON
          2. JSON kit
          3. NSJSONSerialization
        2. Network
          1. Restkit
        3. Image loading
          1. AsyncImage
      8. DB
        1. Migrations
        2. Managing DB connections
        3. Complex queries
        4. Core Data Wrappers
          1. MagicalRecord
          2. FMDB
      9. Keychain
        1. SSKeychain
      10. Maps
        1. Google
          1. Marker
          2. Overlay
        2. iMap
          1. Marker
          2. Overlay
        3. Yandex
          1. Marker
          2. Overlay
      11. Views
        1. Collection View Controller
        2. Page View Controller
        3. Date picker
        4. MapKitView
        5. SceneKit View
      12. Cocoa controls
      13. Audio
        1. Play
        2. Stop
      14. Video
        1. Play
        2. Stop
      15. Animations
      16. Categories
      17. XML
        1. NSXMLParser
      18. Social API
        1. Facebook SDK
        2. ShareKit
      19. Prefix header file
    6. Senior
      1. Testing
        1. UI
          1. UI Automation
          2. Tune UP JS
        2. Unit
          1. Kiwi
          2. Spectra
          3. OCMock
          4. Expectra
      2. Gesture recognizing
        1. Pinch
        2. Rotation
        3. Swipe
        4. Pan
      3. Blocks
      4. Custom views
      5. Socket programming
        1. CocoaAsyncSocket
      6. Image processing
        1. GPUImage
      7. Video
        1. VLCKit
        2. iOSVideoKit
      8. PDF Touch SDK
      9. Protocols
        1. HTTP
        2. XML-RPC
        3. SMTP
        4. OAuth2
        5. SSH
        6. SOAP
        7. TCP/IP
        8. SSL
        9. HTTPS
      10. Patterns
      11. Cryptography
        1. MD5
        2. SHA1
        3. AES
      12. OCR
        1. Tesseract OCR
      13. Web Services
        1. RESTful
      14. Payment System
        1. PayPal
        2. Webmoney
        3. Robokassa
        4. Bank transfer
      15. Augmented reality
        1. Unity 3D
        2. Vuforia
        3. ARKit
  8. Crash reporters
    1. Crashlytics
    2. Bugsense
  9. Tracking
    1. Google analytics
    2. Flurry analytics
  10. Windows Phone