lol all i have to say is(no1 told me this!) remember what gear your in, first time riding i was thinking i was in 5th while i was in 6th, shifted to what i thought was 1st, and stalled cause i was in 2nd.
when i stop it depends on what kind of stop, if i have enough room to speed up more/cruise, ill pull the clutch in, and just wait till i coast down to the lower gear(so if i was in 6th, i wont engine break untill i can go down to 5th) then ill slowly downshift-make sure no1 is behind you, if there is, apply some break so your lights go on and they know your slowing down. so for longer stops at red lights or stop signs, i use the engine untill about 20-30 mph, and then use breaks.
when its more sudden, like light just changed red, car infront stops, or i dont want to run the red light(never run one

) just use breaks and hold the clutch in-i do this because im more worried about stoping than using the engine to slow me down more, and having to worry if im in to high/low of a gear(and might look down as a result).