TBL and PBL
Task-based learning and Project-based learning

Here is a very good and educative article which clearly shows the differentces and benefits and possible difficulties:
https://www.teachingenglish.org.uk/article/tbl-pbl-two-learner-centred-approaches?page=2#comment-206204

First about TBL 
From my experience I can say that TBL is an approach which you cannot simply avoid if you want to make your classroom student-developing and interesting both for your students and yourself. How do I use it?
First, I use it at that stage of working in class when my students already learnt basic vocabulary (and grammar) material and more complicated tasks for developing critical thinking, etc can be introduced.
Then, it can as well be used with beginner students but as their languagebasis is still limited you should be a bit more careful in selecting problems envisioning how students can deal with them with the vocabulary and grammar knoewedge they have.
As an example, you can find an interesting text related to the topic your students are studying at the moment and use TBL working with this text.
One of the techniques is using Fishbone: Fish head is result, fishbones are causes.

This cause-effect activity helps students:
- to work through every detail in the text
- to apply their critical thinking abilities in processing and organizing information related to the problem
- to make a many-sided analysis of the problem
- to make a schematic representation of the problem which is easily stored in mind and, well, it is usefull this way for the exam-preparation process when  you can easily remember what you can and should talk about in case you have to talk about this problem
- to understand what you personally think about it.
.....
How to use it

Fish head - students word the problem raised in the text, the way they see it,
Fish bones - students word the issues mentioned in the text (the most important facts) that "bulid" this problem.
Divide the students into Groups and each group should come with its Fichbone scheme after the discussion.

But let's talk about Group worki n the next post!
YOUR FEEDBACK IS ALWAYS WELCOME!!:):)