Greetings and welcome! Since you have a Twitter account with the same name, verifying your identity should be easy. Please link from there to your account here. I have more about verification in the information I share with promising new accounts below. I'm a security professional too, but IT is not my passion. I'm more into physical security as a residential security expert, and I'm also a registered/licensed private investigator.

There are a ton of other webpages to help you with Steemit. Here are some of the best for beginners:

https://steemd.com/ (This site is used to keep track of your voting power and other stats. You do not want to run out of voting power, and you only get so much per day. I keep my voting power around 80% for example.)

https://steem.makerwannabe.com/ (This site will tell you who follows you, who unfollows you, and who mutes you. It is great for meeting new people too. I regularly check it to see who has followed me to see if I should follow them back.)

https://steemit.chat/ (This site is the official chat webpage for Steemit. There are Discord channels too, but I usually stick to the official site. Come in to network and meet new friends. You can directly message people there too, so it makes it easier to communicate with your closest friends.)

Oh yeah, there are a lot of bots on here. If you see a cookie cutter reply, especially to your intro post, it is almost certainly a bot. Check the account's reputation. If it is low, I would recommend just ignoring them. Everything is public on Steemit, so you can go look at an account's comments and replies. Are they all the same? It's a bot.

Adding photos to your account as a new Steemian may be confusing at first too. The easiest way it to click to "Submit a Story." Once in there, use the built in Steemit tool to upload an image from your computer. Below the posting window, you will see "Insert images by dragging & dropping, pasting from the clipboard, or by selecting them." Click on the blue text. Once the image is uploaded, you can copy and paste the link into your account settings.

Verifying your identity is very important because it will get you more support and people will trust you more. The best way to verify is to link back to your Steemit account by using another public social media account. For example, I posted my Steemit articles from here through my Twitter account. Another person posted their Steemit information on their Facebook account. Some people will even post a video of themselves writing out their account information since that cannot be Photoshopped. The more famous a person is or the more valuable their content is, the more important it is that they verify. If a new account falls within those two categories and fails to verify, it may get blacklisted.

Again, welcome, and I've followed you! If you have any questions about getting started, look me up on the chat site.