I'm a web developer and graphic designer. Self-employed for the past 10 or so years, working for various studios before that.
1. Anyone does have tips to how to land a job in tech/software engineering
Get as much experience as you can, learn as much as you can and often as you can, and be prepared to continue learning. Even with my experience and time working, I still have to learn new things all the time. The web is constantly evolving, and if you're not able to grow with it, you won't last long.
Maybe try to develop some "dummy" projects; websites, UI, etc. In order to demonstrate your abilities, build a portfolio (in the form of a website), and try to get some non-paid work experience for a few months. You won't get paid without any experience, especially when there are thousands of developers out there, with more experience, competing with you for that work.
2.If making porn games can help you out? (Can we put it in our resume?)
You could learn things from making a game that could be of use in web development, and vice-versa. But honestly, they're different beasts. If web development is what you want to do, focus on that.
As for adult content in a résumé or portfolio. I wouldn't ever add it or even mention it, unless you have a target client from the adult industry. If it's for the non-adult industry, you don't want their first impression of you being "the prevy guy", and wouldn't dare hire you.
3. Anyone here is a web developer and what or how did he do to land a job.
I was doing design from about 15 or 16 yrs old, my older brother knew some DJs, so I designed posters and leaflets for them - I earned next to nothing, but it was fun. It just so happened, one of the DJs, has a brother, who owned a design company, and hired me - I was very lucky. They were who pushed me to go to university. It was in University that I discovered web development, and switched to it. It was a great opportunity to learn and grow.
During University, I started doing freelance work. I wasn't very good, but I could do enough to earn some money. It wasn't until I left University when I got another job in another studio, that my skills really matured, because of the influence of the other more experienced designers and developers there.
In my experience, when you're being considered for work in the design and development world, you're expected to know a lot about a few key areas, if you're a one trick pony, you'll always lose out to those more talented or varied in the skills. For example, I work with graphic design, web development, 3D modeling, motion graphics, and video editing. You won't be able to learn that much, that fast. But just demonstrating your willingness and eagerness to learn will be a big plus.
If I were you, I would start reading as much as you can on the subject, web development is a very complex industry, more so than a workshop could ever demonstrate. Start taking online courses, reading tutorials and articles. Follow big designers, developers and learning site's on Twitter. Immerse yourself in the world. There are lots of extremely talented people out there, and the majority are always sharing their experiences and work so that others can learn from them.
Whatever you do, take your time and enjoy the process of learning & the work. Making this kind of work a passion can help you in the long run, and make you more of an attractive hire for an employer.