Even though you’re creating WordPress themes for a while, there comes a point that you will need a reference. Today I present you WordPress Cheatsheets, these are very helpful and full of information.
Best WordPress Cheatsheet
The Advanced WordPress Help Sheet
WP Help Sheet (HTML)
WordPress Theme Development Check List
I hope these handy cheatsheet will be able to help you when you are creating your custom theme. I personally suggest that you download theme and store in one folder, in that way you just look up whenever your lost in the loop. Or you can bookmarked this page instead! If you have any found any cheatsheet that is not in the list, feel free to leave the link in the comments.