OMG... Your never going to believe it... My progress today & this evening.The single most important thing I've learned for Boss fights is to be aware of/use the terrain.
Souls games are set up pretty precisely IMHO for the "arenas" you find bosses in.
For example, I was unable to defeat Father G before using terrain to my advantage. The first few fights were comical, as he's so aggressive, and I was trying to get my hits in while he's pummeling me. After thinking about what I could do better, it clicked, and was more of a moment of "remember this is a Souls game-be aware of your surroundings!"
I tend to upgrade endurance first, to be able to move around the opponents, and still be able to dash in, land a few hits, and get out of there. After that is skill, then vitality, then strength usually. Suits the way I play.
Managed to kill those Shadows of Yharham (sp?) yesterday, after remembering that first point. Again, my first few fights with them were comical, and they consisted of me simply running around trying to avoid them for slightly longer periods of time. Then, I changed strategy, used the terrain, and was more aggressive rather than defensive. Worked out well!
Good luck-let us know if you'd like any tips-you are soon to be hooked, I predict....
Killed Cleric Beast
Killed F.Gascgoine (like you said using terrain (getting behind headstones / lobbing Molotov's / before getting few hits in when he's recovering)
Got to Cathedral ward, killed a number of those creepy guys with lamps, the big Giant guy and made my way down to light the lamp in Old Yarnham !!!!
I'm resting my game here for moment. But wow. All that farming, learning the ropes is now finally paying dividends and I'm making much greater progress.
I'm so glad I gave this a second chance. The game has not become easy by any means, but its become manageable and more importantly enjoyable.....
Its finally hooked me good & proper....