my simple tips and tricks:::: light weight! 40# bow is perfect to get started trust me and there are plenty of folks here who consistantly use them to take deer a 40# bow with a 400grain arrow does damage and even cleans itself with dirt on the other side trust me.
start close,, only practice close and when it starts to become too easy then move back..
what I say to beginners I'm with is this,, there are many different styles but for the first timers,, draw the string back to anchor with 3 fingers (1 over 2 under the arrow) just barely hold the string so it feels like its almost slipping off (this may change later with your own stlye but for now it eliminates release mistakes)
when you come to full draw and anchor push the hand thats holding the bow right towards the spot you want to hit and let the string roll out of your fingers while still pushing that bow until the arrow hits (this promotes good follow thru)
for the first few weeks do not try to hit bulls eyes, you want to focus on hitting a tight group even if its high left or low right its the tight group you want to see when your practicing,, eventually your brain will adjust and that group will move right to the point of aim.
with my daughter who is 9 I hang balloons from branches with string so they are about a foot from the ground, I also fill them with a little flour for the smoke effect when popped.
filling them with water is fun too.. but kids need to see something happen or it becomes boring. a empty clothes detergent jug on the ground being shot at with blunts by both of you is fun because you two get to just unload arrows together watching the jug bounce arround just pay attention to safety.
if you get or make flu flu's you can buy those cheap ballon kits that have tyhe helium and what I do is I have a lead weight that has a string on it and I lay it ovcer the knot of the ballon,, stand 30' ft away and pull the string which slides the weight off and the ballon goes up and we just bomb flu flu's at it and the kids love that one.