there should be an very comprehensive manual for that aircraft included with the download (about 88 pages), which explains how to do it. it's not the easiest plane to get off the ground, that's for sure.
if the download didn't include a manual, search for "project tupolev" here or on any other major flight sim site and you will find it.
or maybe someone else will go through the start up procedures with you, i can't help you here sorry
