These notes mostly comes from Hacking Growth by Sean Ellis.
Step 1 (ch 2). Validating the idea & product
Step 2 (ch 3). Identifying the growth levers
Step 3 (ch 4). Testing at high tempo
Step 4 (ch 5). Hacking acquisition
Step 5 (ch 6). Hacking activation
Step 6 (ch 7). Hacking retention