I just went through similar pain - this might help a bit
Apple AppStore no longer allows downloads of iPhoto 9.6.X in USA! (And now maybe UK as well as I see some notes on that in this forum) So I am fortunate to have an Apple store nearby (30 minutes) made an appointment with a Genius for this morning.
1. She told me that iPhoto is no longer available - only Photo!
2. To Print, select the image then go to the UPPER tool ribbon - select FILE, then Print and the options come up. Not great, but workable.
3. To get an image into an Album, [ I sort my photos by Albums for rapid searches ] Select the photo - then the "+" symbol and one of the options in the right hand box is "Album". clicking on that brings up an Album window at the top - where you have to click the arrow to the right of "New Album" and your entire list of albums shows up. Then you slide down the list [ I have about 120 albums so not all show up in the initial drop down] and click on that album - the name of the album shows up in the top window - click on "OK" and it is now linked to that Album.
Overall NOT nearly as easy as iPhoto - so the gang in California have some serious work to do. I really liked the older screen arrangement.