Start by solving the first visible puzzle. Most answers are one word.
The three sentences might look familiar...
Yes, you’re on the right track. The bust is of him. A general... they named a cipher after him, didn’t they?
Welcome to Sleepnet. Remember to read the topic title.
They do on SleepNet. Watch the highlights.
Some days, it’s the only language we still speak here. Maybe you should count the number of emoticons in the grid.
What else familiar to you comes in a group of 26?
There's missing data... so fill the gaps.
Ah yes, it's him again, from the first puzzle. Same logic applies.