Is there a free site to learn how to deal?

Just for home games. A site that teaches sample hands etc.. Just get flustered when three short stacks go all in and your dividing four pots and everyone's on edge!

Have you tried typing "learn how to deal" or "side pots" on youtube?

That would be interesting, but even more interesting is how to spread chips.

sounds like some juicy home games

It isn't really that hard and even if you find a site it will take practice to become proficient at it.
Just work from the lowest stack to the highest. Count out the chips of each player who is all in, take the lowest stack's amount and place this amount from each player's stack into the main pot. Then repeat this process, creating subsequent pots until you are left with only one player and return the remaining portion of his stack to him. Be sure that you remember who is eligible for which pot. It is helpful to remind the players of this BEFORE the remaining cards are delt.

just ask your fellow players when goo all in, to not throw the chips in the middle like sheep, so it will be easier to count.
Usually the players involved in the pot counts their own chips especially if you play with friends. I do not think they are so arrogant to require the chip count from the dealer