Wow, just wow. Are you even listening to your tracks?
Im not normally a d**k on these forums but you really need to understand the basics of song structure and basic music listening before you should even purchase hardware or software.
If you really need step by step instructions on how to find a breakdown, then follow the steps below:
Take a few months of just listening to tracks, no mixing. Just get an mp3 player and listen to them. Then, take a few more months and decide what kind of music you like. Then take a few months and decide what style of that music you like. Then take a few weeks to buy some tunes of that style.
Then, get some equipment. Take a few months of just learning that equipment and software inside and out. Then, take a few more months of learning how to do basic mixing of said music we collected earlier.
Buy more music.
Listen to that music, then listen to your collection again. Cultivate your library.
Take a few more months of time to learn some basic tricks of DJing.
Buy more music.
Listen to that music, then listen to your collection again. Cultivate your library.
Talk to some people in your area about playing somewhere. Not a club or bar, but maybe a coffee shop, and hookah lounge or an art gallery.
Buy more music.
Listen to that music, then listen to your collection again. Cultivate your library.
By now, youll know what a breakdown is.
If you still want to be a DJ at this point, then youre a lot farther progressed then most newcomers nowadays.