Google -
BAH Humbug!. Our wiki has many very useful links to help get you started.
Learning about propagation is indeed important - but you don't need a degree in astrophysics. A basic understanding will do, and this site is a very good one to get you started...
Propagation Primer - Flash Movie by AE4RV
Note that you will need Flash software to view the tutorial. It's worth a look.
Don't put too much antenna on the S350. About 30 foot or so will do fine, as Xeno said - there's a spring loaded jack at the back of the radio for this. See this image from the Universal website...
Eton S350DL rear panel
While MT has some interesting articles, you really need a more up to the minute listing of station schedules. Keep in mind that magazines typically have a 30-60 day lead before publishing. Things can and do change that quickly. The Shortwavestuff link Xeno gave you uses a Excel spreadsheet which encompasses schedule data from many sources, including Prime Time Shortwave. You will need a good unzipper program such as WinZip or
7-Zip to extract it (never depend on Windows Explorer - it can and does sometimes corrupt the archive, making reading it impossible). The individual that updates it tends to do so as soon as he can - sometimes it's a few days before he gets it done, as we're in the middle of a period when broadcasters set up their Winter schedules. It is the most complete reference you will find anywhere - and much more up to date than the one MT supplies.
Lake County is in what state? There are 8 states that have that as a county name. Once we know that, then introducing you to Universal time (otherwise known as Greenwich Mean Time or GMT) will become more meaningful. However this page will give you a good start...
DXing.com - UTC
And for lots more information on many facets of SW...
HF Radio - the RadioReference Wiki
Best Regards...Mike