you put as much bud can fit in the paper or how much you feel like smoking, usually comes to about a gram per joint for a good one.

tobacco and joints are a euro thing and it takes away the taste of the good herbs. i used to smoke tobacco and wont even do that.

the filters(pieces of thick paper) are used to keep the end from closing up and kinda like roach clips/stones as it makes it easier to hold and hit