This is almost the same as doing it in person but there are going to be some differences because of the format. If you want to talk in character make sure you put anything you are going to say in italics. That way we can separate anything spoken from the things that are thought. Feel free to use your characters thoughts and feelings in your posts, the more you can flesh out what is going on for you the better this will go.
If you want to ask me something outside of the game start it with OOC: Out Of Character, again this will help break things up so we know what is being said and in which way. Once we get to combat I’ll give you a breakdown of how that is going to go also.
Obsidian Portal has a built in dice rolling mechanic, click on that and a windows should pop up. There are two ways to sue this, you can either click on the type of die you want rolled (d20, d10) and it will automagically roll it for you, or you can type in what your sheet says (1d20+4) and click Go! and it will roll and add the modifier for you. Once you roll you can either copy and paste the roll in or take a little screen shot and throw that in, it’s up to you