Everything I wish I knew when I joined Tumblr. Basically this is a collection of things that will make Tumblr easier to use :D

General 

How to: Enable your Tumblr ask box How to tag How to tag asks How to have posts show up/not show up Trigger Warnings Tumblr Savior How to Report a blog 

Theme/Code

How to install a theme Theme Directory  My Favorite Theme Makers (X) (X) (X) (X) (X) How to: Add links to your Tumblr description/sidebar Icon Finder Help picking a color scheme to match your icon How to Install Updates Tab (X) Updates Tab Masterpost How to add a music player (X) (X)  Transparent Images and Pixels (X) (X) (X) (X) (X) (X) (X) (X) (X) (X) HTML Color Codes Creating a poll on Tumblr Creating a countdown   How to create a re-direct page Blogrolls, Family, Follow Forever  How to make a network How to Install a Navigation Page HTML Codes  HTML Help & Codes Tumblr Formatting Cheatsheat Theme making tutorial Tumblr Blog that helps people with tumblr related issues

*Remember most theme makers will answer questions about there them or already have FAQ Page to make it easier for you to use

Photoshop/Photoshop Resources

Tutorial for saving Photoshop (windows) Masterpost for downloading Photoshop How to make a Gif Learn the Basics of Photoshop Beginner Tutorials for Photoshop Photoshop Graphic Masterposts Photoshop Tutorial Masterpost  Textures Guide Photoshop Help Blog  Photoshop Help Blog Screencaps  Screencaps HQ Celebrity Gallery Masterpost

Alternatives to Photoshop

Pixlr Mypaint Animating Program Digital painting Program Art Program/Photo Editor Queeky Paint PicMonkey Art Program Sketchpad  Drawing Program Graphic’s Program Paint.net Sumopaint Free Art Programs Masterpost

Gifs

Supernatural Reaction Gifs Reaction Gifs  Reaction Gifs Reaction Gifs Reaction Gifs Online Gif Maker  Online Gif Maker  Online Gif Maker  Online Gif Maker

Meme’s

Quick Meme Maker Pie Chart Maker Meme Generator  Meme Maker

Fanfiction/Writing/Roleplay

How to write Fanfiction Avoiding mistakes when writing fanfiction 10 Tips to Writing Fanfiction How to Submit a Fanfiction to Fanfiction.Net  Writing Fiction Plans Writing Templates Novel Outline 34 Writing Tips How to write a Character Tips on writing a Character  Character writing Masterpost Writing Masterpost (X) (X) (X) (X) (X) (X) (X) (X) Diverse Character Writing Masterpost  Detailed Character template How to write different Body types (X) (X) Surnames MasterPost Synonyms MasterPost Creating an OC Masterpost                                                  Writing Folklore, Myth and Creatures Masterpost                      How to write Ancient Rome England  Viking Age Victorian Age Middle Ages 50’s Wild West Other things to help your Writing  (X) (X) (X) (X) (X) (X) (X) (X) How to RP Masterpost Roleplay Terms RP Guide RP Help Masterpost

Other

Help Fact Check Tumblr Posts Urban Dictionary  See if your about to hit post limit In case you update software and it sucks  Writing, Graphics, Textures, Themes Masterpost Massive Masterpost included Writing & Art Tutorial Master Post