Best option to buy tickets?

[jdrocko]

Hello,
I'm going to be a week in Us (Houston) to attend a work event; I would love to see Celtics live for the First time but schedule Is too tight . I saw there's a match on 11th Clippers @Houston so I was planning to buy tickets, what site would you suggest to buy them? Anyone has been in Houston arena and has any tip for what seats provide good visibility? Thank you!