To start a blog is easy. But to sustain it with consistent posts and updates to keep visitors interested and be regular visitors and followers is difficult.
But you have decided"It will be based on technology guides, information and tips. ", and it is a good area and you can write on various sub categories under this umbrella subject. If you are interested, having some academic background or experience in the selected field, then it will not be difficult for you to contribute posts regularly and with latest on the subjects. The area you selected has good scope and gamut. They are current and growing subjects. So there will be demand and search on them.
What were the subjects on which you were writing for others? If they are on the same subjects then you have got some needed experience.
ISC has also many articles and question answers about starting a blog, niche subjects and tips for blog sites get more traffic. You may search the site using suitable key words. Those posts and articles can be of help to you.
The main requirement is you should be able to post regularly and consistently on the subject, get feedback and interaction from readers, make suitable changes gauging the visitors requirements, post quality articles and posts. If the visitors get what the searched for from your blog they will be revisiting and that will help your blog to come higher levels in search.
As you are a member of iSC and had written articles you may be knowing about significance of keywords ,SEO etc.
You also follow other blogs on the same subjects to stay updated and knowing what is current.