Trouble using the clutch..?

I was doing s motorcycle course this morning and I was enjoying my self and was doing pretty good. I was riding around in first gear. Then we started this next exercise which was riding our clutch snd going through pylons. I found it hard. I let my clutch out to much or not enough...I didn't stall it but the bike lurched forward on me twice when I was doing my left turn in the figure 8. I scared my self and went home. I really want to ride a motorcycle and I already regret leaving but I just couldn't figure out that dam clutch. Anyone got any pointers and does it ever get easier? Why doest lurch me forward like that?