I will not be tagging this puzzle, purely because I don't want to give away exactly what is in it, but I will give you an "abstract" for it. (except for the one "computer-science" tag because I need that to post)
This is not a single puzzle, I will give you two things to begin. One is a link, another is encoded English. The link goes to a Sherlock Holmes Collection PDF. The code, well, I'm not going to tell you what it is; but it does decode directly to English, and is not scrambled, or ciphered, there is direct correlation. The only thing about it that may make it difficult to decode is it's shortness, and therefore lack of data.
The code will help you find something in the PDF, that will take you to the next step. I cannot tell you what you will find in the PDF, but if you have a good guess then CTRL+F will shortcut you past having to solve the code. Solving the code will make it easier to find what you are looking for in the PDF. Though if you solve the code, then already having read a particular story in the PDF will help you know exactly where in the story to find the redirection to the next step of this "Puzzle Course". At worst, you'd have a tiny bit of Sherlock reading to do, but this is "Puzzling" on StackExchange, who here would complain about reading Sherlock?
The next step will require you to know a fairly intermediate-to-advanced knowledge of computers, because it will give you a link to a locked PDF and using your knowledge of computers will get you another code, which, once decoded, is the password for the PDF. Again, that code is just like the one I am giving here, it DIRECTLY correlates to English, is not scrambled, or anything mean like that. It's as direct as 1 = a 2 = b 3 = c. The PDF's password is like 20 characters long or something so don't bother trying to brute force it. The only reward for solving all this is the same as any other riddle, the congratulations of exceeding my intelligence hahaha
TLDR: Use the code to help you find a thing in the PDF, which will take you to another hidden code and another locked PDF, the hidden code helps you unlock the PDF, and once you do that you win. All codes directly translate to English, and no excessive amount of reading should be necessary with either PDF.
So... Here it begins.
First Code: 10=1==01110010=0==0=0111=01011=10
Sherlock PDF: Here.
Final notes: I have a document keeping track of the entire development of this course. If you think something does not work, let me know, and I'll fix it. Please leave an explanation if you downvote this, I'm alright with taking downvote hits but I really do appreciate feedback.
1 of 2 --- On the 0,1,=, code. All three of those symbols are arbitrary, you could replace them with 1,2,3, - a,b,c, - a,1,+, whatever you like. :)
2 of 2 --- On the 0,1,=, code. 10= is equivalent to English "t".
You may begin.
Note that I want people to solve this... so please help me help you get through it. I will give a good hint on how to break the first code in a day or two.