There's a couple of good blogs - Layla Blue Abaya and Susie of Arabia.
No general websites for compounds that are any good, up to date or reliable (pretty typical for most business websites in KSA!). Most compounds have their own websites but won't list prices, it's all about negotiation.
Yes, all social media (apart from facetime, you'll need VPN for that) is allowed. VPN is handy, we use a VPN service and can watch all the British TV, Netflix etc.
You will need to be 'sponsored' by your employer to work - what kind of job would you be looking for?
Yeah licenses... when they first allowed women driving, it was for all women. But I think there was a huge number from applications from non Saudis compared to Saudis, so they've stop them until there is more uptake by Saudi women. Very frustrating, there's about 120k applications on hold at the moment. What makes it more annoying is that a female visitor to Saudi (ie not a resident iqama holder) CAN drive on their own country's license during their stay 🙄. But that's Saudi for you.
Food has gotten more expensive over the past few years..VAT @5% was introduced last year. Fuel has doubled in price from around 7p to 15p a litre. Whilst that's still ridiculously cheap compared to other countries, it still affects businesses relatively. We generally shop in supermarkets but you could save money by shopping at local markets etc. For transport reasons amongst others, we stick to the big supermarkets.
In general, cost of living v salary, Saudi is the best place in the ME. But that's because there's no booze or pork, so a bit of a trade off...