If this is your first experience assembling a bike you are really starting at the top. Most home bike mechanics get their experience doing a range of ever increasingly complex work on an existing bike before tackling a brand new high-line frame and group build.
I don't want to discourage you but any newby mistake could be very expensive. If you are not experienced with previous bike work, you might try to get an accomplished mechanic to assist with this project even if you do most of the work yourself. The extra money spent could be well worth it.