While not a strong player, (I not played chess in years) my main experience of chess programs have been chessmaster and some free programs. While Frtiz 14 program on steam has had its fair share of issues, they seem to be mostly fixed now, so what do you get with the steam version of fritz 14?
You get Fritz 14 GUI
Fritz 14 (single core engine)
fritz 11 SE (also single core)
crafty 23.05 (multi core engine)
Video beginner courses
Fritz 14 opening book (weighing in at 449 mb (not sure how many openings)
2013 database weighing in at 809mb and has nearly 3 million games
lets check database (subscription based)
and 6 months access to Premium membership to Playchess.com
So for those wondering the difference between this version on steam and deep fritz, well the engine on the steam version is single core only, (apart from crafty) hence the lower price, otherwise I think there is no difference.
One thing I should point out is, while I do recommend the software, I don't recommend it for those new to chess, learning the basics, there are better ways to learn chess, Fritz is aimed at those that already have skill with the game, and want to go farther. So if you are a rank beginner and hope that Fritz will teach you the basics,, basic tactics and want good tutorials, I would look else where.
While Fritz does have training modes like Friends mode (which auto adept to your strength and play style), Handicap and fun, some opening and end game tutorials (as well as a few others) sparring mode that you can set the level 1400 up to 2480 and handicap position (removes pieces from the board) there are a few other modes too.
there are a few visual help options like spy, opening hints and so on.
Then we have a very powerful features of Frtiz, Full analysis mode and blunder check, (also have a infinity analysis mode too)
Two feature I just noticed, Fritz can also play chess 960 (where the chess pieces are randomly placed and with some extra rules) and givaway chess, (you are forced to capture any attacked pieces) these modes can be fun and access by the little down arrow on new game in the home tab)
You have a lot of options, so describing them all would take a lot of work. I'm only really covering the main features.
One thing I must mention is the extremely poor help file, it's just plain horrible, and doesn't really explain all the features of Fritz that well, even the PDF file seems to be more cut and paste from help file or vice versa, so some features (or many) might leave you head scratching on their purpose. So when you do start using the program, I highly suggest you check out videos done by Steve Lopez, as his videos have allowed me to understand a lot of features which would otherwise be unexplained or never used.
another aspect I will mention, Fritz does support UCI (Universal Chess Interface) engines, (free and commercial) so you can easy add more engines of your choice, (stockfish for example (which is free)
I think I will wrap it up by saying, I think the program deserves an 8 /10, but you should only get it if you know chess pretty well, but you also should only get this version if you not got a recent version of Fritz, as you may not see that many differences, (feedback from other players who have owned Fritz 13)
so after that, I don't think I have much else to add.