The TV version is good, it misses a few scenes but nothing that important.
Now you should watch Harry Potter 1-8, it's probably the longest movie series you would be watching so might as well get that out of the way, and it's great.
“Anna, my strong, terrifying Anna.” -Cas
"You lack the testicular fortitude to study under me" -Elodin
“slow and drunk is no match for fast and scared shitless.”-Jacob