Anyone knows for a free, comprehensive, online English grammar? It should explain - a, the....in detail - capitals in titles - spelling rules - and everything other... Or..if someone is in the mood - we can start a thread and ask/answer questions...
I'm not quite sure if http://www.1-language.com covers all that you asked for, but it's a decent website. I'd recommend it to anyone wanting to improve on their English language skills.
Well, I already have this one: http://www.wordpower.ws/grammar/gramtoc.html that looks detailed, but doesn't include - capitalizing of titles - using of "the" is not fully explained
Purdue University's online writing lab, affectionately called the Owl Also, the Absolute Write forums have a thread for grammar and syntax. I'm pointing you there only because I'm not sure if a whole thread for grammar is appropriate here at DP. Anyway many of your questions may already be answered there.
I absolutely recommend OWL @ Purdue. I know several people who work for them and the content is easily understood and quite helpful.
Another helpful link: http://www.grammar-monster.com/. This site contains a large list of grammar lessons and common grammar errors.
It sounds like you already have a decent handle, so it wouldn't be for you, but for someone brand new to English, I love www.mingoville.com. (Disclaimer: they're a past client.) It's an interactive game-like environment, and designed for kids, but it's adorable (and even I used to get caught up fiddling with it just for fun back when I was doing writing for them).
Also remember Microsoft Word has some checking mechanism. Also the best offline source for learning grammar are the text books authored by Wren and Martin.
Know more about them: http://en.wikipedia.org/wiki/Wren_&_Martin Their book is quite popular in India, I also have it.
Owl, that forum, monster, and one fat book - this is what I guess I'll need. Obviously I'm a spoiled one since I've found a booklet (100 pages) with only one topic: a, the. My aim is to have something handy, since I don't exactly intend to graduate in English grammar.