Congrats on yer 1st (of many) gun!
Handle EVERY gun as if it is loaded until YOU have safety checked it!
As for the sticky follower, check the baseplate of the 30 rnd. mag., see if there is a small rnd. nipple in the middle of the plate that can be depressed with a pen/punch/small screwdriver. Push the nip. up and slide the baseplate slowly off of the mag., being careful not to allow the mag spring to come shooting out of the mag body.
Clean the inside of the mag, spring & follower. Check follower for rough edges, if any roughness is found, sand lightly until all edges are smooth. Lightly, very lightly, lube all parts, reassemble and test the mag out. If it still does not feed well, the spring may be shot or you may have damage to the mag body that interferes with proper feeding. Buy new mag or just use the other 5 and most of all, enjoy your time shooting SAFELY!!!