yo you should get away from that biggie beat lol
that second part was slick tho
but yea man, shit
whosampled.com
thats a site^ where you can search songs and artists to see what samples were used to make the beats, you can use that as a resource to practice re-making beats and seeing how producers approached the samples.
now when you want to find stuff to sample, you have to dig. you got the entire internet at your disposal. here is a good blog for soul music
http://www.funkmysoul.gr/
when digging soul music, there are some key things i look for.
1. the year. 1965-1973 is my favorite time period. the way the records were recorded, the equipment they were recorded on, and all of that was perfect in that time period for hip hop. its dirty. its warm. its BIG. drums SLAP. horns sound good etc. now, thats not to say something from 1977 isnt good etc. its just preferences. around 75 and later, disco was getting HUGE and alot of soul artists tried there hand at it. disco is uptempo happy dance music. basically its terrible. so thats why i tend to stay in the early 70's. good soul music was made even into the 80's, its just harder to find. 9 out of 10 are gonna sound like disco.
also drum machines and synthesizers and stuff like that started becoming big, which 99 percent of the time is terrible for hip hop. you don't want to sample something that already sounds like a beat. you want to sample something that sounds like a BAND.
thats a good start there resource wise
blogs are your best friend. google soul blogs, jazz blogs, etc. people put up old records for download and thats how you can get alot of sample matierial
you can probably even find blogs that specialise in putting up sample worthy music. i stay away from those because its all been touched so much i dont even bother, but you being new its good to get your hands on GOOD samples, because its easy to get discouraged if you download 10 albums and don't make a beat from anything off any of them lol