Hi guys, looking to get my very first apple watch later this week.

Just had a few quick questions that i'd like to get more information about before I decide to purchase, hopefully you guys could help me out.

1. I listen to a lot of audiobooks on audible on my iphone. If i 'sync' my watch w/ my iphone, does any changes that i do on my apple watch carry over to my iphone or are each one individualized? For example, if im listening to my audiobook using the audible app from my apple watch with my bluetooth earbuds and then later check on the audible app on my iphone, will the listening time and where i left off in the book carry over to my iphone or how does the 'syncing/communication' between watch and iphone work? Pretty much my question is, whatever I do on my apple watch and/or iphone carries over to the other device or what?

2. Follow up to the question above and probably the question i'm most wondering about. On the lock screen for the iphone, you are able to go backwards or forwards 15 seconds (same logic as when listening to music but you have prev song and next song instead) when listening to audiobooks. If my watch is synced with my phone, is it possible to control going backwards or forwards on the apple watch and have the changes apply to my iphone/book so I do not have to take my iphone out to do so every single time (would be a lot easier just to tap my wrist). Hopefully this question makes sense.

3. Any difference between the 40mm vs 44mm besides bigger display? Any spec differences or is it really just a bigger screen and thats it?

4. If I get the watch with just GPS, no cellular, in order for me to use the internet (or anything that requires data) on the apple watch, I would 1. need to be at a location that has wifi or 2. if there is no wifi available, I would just need to have an iphone with data on me to use internet on my apple watch? Is this correct or?

Thanks for any help that I can get, everything is appreciated in advance!!