You are welcome to use your own tools to host webinars, which makes sense especially if you are used to them. Please ensure your webinar has the ability for users to interact and ask questions. Ideally you should be able to record your webinar and upload it to our youtube account afterwards as well.
If you do not have a preferred tool, we recommend that you use google hangouts with the Q&A plugin enabled. Running a webinar well takes a bit of effort and practice so it is good to get familiar with the toolchain in advance.