google keyword planner. I would suggest spending a little money though and getting something better. This might help
Without any doubt, Google Trends is the best effective tool for keyword research. It's free and built by Google.
Hi Mazibul alam, Check out this neat overview and comparison between the most popular and free keyword research tools: http://blog.linkbird.com/en/content-marketing/10-best-free-keyword-research-tools-content-marketing/ Hope this helps!
As a beginners, the best and effective tool for keyword research is Google Keyword Planner. It helps you lot. Google keyword planner is one of the best free keyword suggestion tool for every virtual human being. So, i think that it's very help you to find out a well keyword. I have another news to you that if you need a long tail keyword, must be go to Long Tail Finder.com. It's free long tail keyword too. I think may be its help to write well content. Thanks.
it all depends on what goals you pursue in your research Google Keyword Planner it's a small piece of a big amount tools like: tagcrowd, keywordtool, semrush...