I find dishpointer.com the best for finding the look angles and location to point the dish. I use the map to see line of site, a tree, some marker to help align the dish.
IMHO, i think 103w is a must if your interested in news and/or music channels. It also has an entertainment channel. There is debate as to whether PBS might be on the move from 125 to 99.
Lyngsat.com is a place to jump through the KU satellite positions and look at the KU frequencies and see what stuff you would like to capture. (Your looking for the unencrypted dvbs/dvbs2 signals)
30w and 97w are the most forgiving for small dishes, as many of the signals are still DVBs or Low FEC DVBs2 signals. If you are attempting any other satellite positions, SIZE is the gonna make a huge difference. I would say for your location, you really should not touch anything smaller than a 39 inch dish... You can still order those without loosing bank. But, if you can catch one, a 1.2meter inch is king. Anything lower than 39 inches, and with everything perfect - no weather conditions, no wind and a perfectly aligned dish and LNBF, - Still there are some signals, you just wont be able to LOCK.
I would say since your new to this, start with one dish (39") and then determine which satellite position interest you the most. Ie, the ones that send signal to your location (satbeams.com) , and have FreeToAir (Un encrypted) status for you to be able to watch (lyngsat.com - Which also has footprint images for many of the satellite positions, but satbeams has pretty much all)
You will also want to post questions regarding to specifics on whats available to watch in the "FTA - Whats up there?" thread. People won't get into much detail about whats out there free to catch, as sometimes that has ended in signals being scrambled/encrypted.
If you catch the bug, it can be fun and addictive. I went from one KU USALS moveable dish to 10+ KU dishes catching just about every FTA KU signal available at my location.