I can't give you any advice on tool's but i would like to ask a question if that's ok.
Do you have to pay for this course?
The reason i ask is i know of about five (so called )
tiler's who are now teaching and the reason they have the job is because they could never earn money as a real
tiler ,so am just assuming that if you pay for someone to teach you plastering or boarding(dot and dab),then these people are also not able to make money in the real world (and god now's there's not many great plasterers out there to start with).
Now before anyone say's anything am not saying all teacher's are inadequete but the bulk of the one's i have come across are(How many people do you know who spread the back of the tile instead of the wall and call them self teacher's?)