Safari is good, but wouldn't something like Pluralsight be closer to Lynda?
Lynda actually wasn't as good as Pluralsight purely on technical topics, but what they did very well was "everything else." Their niche (if they even had one) was that they did other topics.
I'm a subscriber to Skillshare and think it's good value (just $9.99 a month, or $8 a month if you subscribe yearly).
Other sites that cover similar design topics and design software are: digitaltutors.com and tutsplus.com (I've not used either of these though).