Give me a trusting website to get minecraft mod?

Try Planet Mine craft, or just look at people on YouTube such as PopularMMO and TheDiamondMinecart. They do "Mod Showcases" where they show parts of a mod, then leave the download link in the description where you can download the map. If you want to play already made mod packs you can go to the FTB website and download the launcher, google "Feed The Beast" or google "Technic Launcher," download the launcher and then look through their list of thousandsss of mod packs.

Thanks you helped;)