Two important questions

Firstly, what would one recommend as the best window size for a project, if I want it to be able to be used by many, embedded on websites, and be a relatively large size.

Secondly, I read the blog post on the audio formats. Does this mean that, for the foreseeable future, I have no options for audio that is supported by all browser types? If that is the bleak case, what format would I be best off choosing?

Firstly, what would one recommend as the best window size for a project, if I want it to be able to be used by many, embedded on websites, and be a relatively large size.

The default 640x480 is a good size for a display that fits on most screen sizes while not being too small.

econdly, I read the blog post on the audio formats. Does this mean that, for the foreseeable future, I have no options for audio that is supported by all browser types? If that is the bleak case, what format would I be best off choosing?

Maybe you missed the point of the post. Construct 2 converts all your audio to Vorbis (.ogg) and AAC (.m4a) for you, to get around this issue. (You need Windows 7 to encode .m4a though.) So you need two formats to cover all browsers, but Construct 2 helps you do this.

Oh, that's great then.

Hmm, 640 x 480 is a bit small for me. Are there any higher resolutions that would be acceptable to gaming websites?

Conversely, is there a way to 'shrink' what is on screen to make more fit into the same window size.

Maybe ask the gaming websites you have in mind about screen sizes, I was just guessing really. You can zoom layers, so if you zoom all layers, you can shrink down the whole display.

OK, thank you.

How does one zoom a layer? I looked all over the place, couldn't find anything.

Also, (I doubt there is) but is there an easy way to 'pause' a layer or a section of the game? (e.g. if I want a pause screen or an inventory to come up)

Thanks for your helpful replies!

How does one zoom a layer? I looked all over the place, couldn't find anything.

Action system-Layers => Set scale

Check the inline help (within the actions window) for use.

Also, (I doubt there is) but is there an easy way to 'pause' a layer or a section of the game? (e.g. if I want a pause screen or an inventory to come up)

A little search for the word "pause" on Construct2 general and "How do I" sections would have brought you the answer :

http://www.scirra.com/forum/how-to-pause-a-game_topic44747_post280297.html

http://www.scirra.com/forum/cant-pause_topic44633_post279603.html

The zooming works perfectly (And looks nice!)

However the pausing looks VERY painful. If I just set the game's timescale to zero, some things keep working (like rotation, spawning, etc, etc)

Does this mean I have to include delta time in all of my expressions?

Does this mean I have to include delta time in all of my expressions?

Yep, that's the standard. Not including delta time should be considered a mistake.

OK then.