Yes, we are experienced. The very best guidebook is Lonely Planet Ukraine. Ancillary reading may be done using the Brandt Ukraine guidebook. See everything. If the hotel where you are staying has copies of In Your Pocket Lviv guidebooks use one.
The Tourist Information center is at 1 Rynok Square. The people there are exceedingly helpful.
We were there just under two years ago and will be there again in a week. Lviv is an old European city and it is wonderful. If youa re flying in there is a tourist information desk at the airport. There is (or was) an ATM at the airport. A mashrutka bus takes you in to town and the info desk can tell you how. You will need Ukranian money.
You should know the Ukranian alphabet before you go as well as simple words like hello, good bye, please, thank you, that sort of thing. Lonely planet publishes a small Ukranian phrasebook. You will find a number of young people that know English, however not many and after age twenty-five hardly anyone at all. Most hotels have personnel who know English. The Lonely Planet book has the towns bilingually. If you need to communicate that is a help. On the last trip we traveled around western Ukraine on our own. My wife would copy the next town onto a sticky note and show it to a ticket window when buying tickets. It helps to be able to count to five"odin, dva, tri, chetiry, pyat, especially when ordering pivo.
What to skip. Why go if you don't want to see everything you can. The downtown is compact so you can see quite a bit with fairly easy walking. We had plenty of of favorite experiences, everything was was a pleasant experience. There was nothing negative about the visit and it was the starting point of a six week trip in the country. Try to spend at least five or six days there. You will see people begging and it is not considered a negative thing to help them out as the social welfare programs in Ukraine are practically nonexistant. We did, and saw others doing the same. Let us know if we can help further.