The DKC community have a wiki in which you will find all the info you need, wether it's generic info or way to play the individual level. The wiki contains some really safe strats in addition to the safe strats.

This page is probably the best place to start if you want to learn the basic of DKC1 speedrunning : https://dkcspeedruns.com/DKC_Tricks Here is the main page of the wiki : https://dkcspeedruns.com/Main_Page

Have a great time learning and running the game