I tried this kit from the beginning, turning a led on/off, instructions are clear but you should not really be a newbie, in some way, it is "advanced", explanations and details are terse, at least to me even if everything started to work first try.
I found amusing a few devices like tilt sensor (which worked immediately)
After this, all went even better till the rotary encoder experiment, I found problem with sw, the rotary library seems missing, other implementations on the web are sometime different (e.g. different number of arguments).
Finally I got some result , but reading is a bit unstable, with error messages related to lack of memory (!!) or data lost, It might be a very unefficient implementation.
Ldr sensor, IR , flame sensor, laser pointer all worked immediately, instructions are clear.
For the moment I stopped here but the box is still full of devices so it will take time to explore but it seems a very good deal and I am very happy, only sw should be updated for the rotary switch.