This is how I lace my boots. I am not the authority on lacing, but this is the way I was taught as a child by my first coach Tony Howard.
I use the OVER/AROUND method on the hooks. It seems to lock the laces down better for less slippage. There are lots of techniques people have and it really varies from skater to skater and boot to boot. Personal preference has a lot to do with it, but this is a widely used method.
You can see my tongue has a groove in it that nearly turned into lace bite when I first got them. You should try to not let that happen for as long as possible by moving the tongue around to different positions each time you skate in new boots.
I started with really loose laces before this video was taken with the tongue all the way out - but then I had one lace longer than the other by a lot and I had to fix that and start over and I forgot to run the camera from the beginning... but you get the idea.
FOR BEST RESULTS - CONSULT WITH YOUR SKATING COACH!
Below is some of my practice today. I revisited my program without the jumps and spins. Boy was I tired. I did a little improv to the rinks music - worked on some different position spins.