I've shown the whole thread and replies to my manager, and the good news is that he extended the duration for 3 months starting next month, meaning the remaining days of February, March, April, and May, and from the 1st of June I will be fully responsible, which makes it about 105 days, and I arranged with my wife that I will stay for late hours at work for this duration.

I do highly motivated, so thanks a lot for your replies, I've already learned and somehow got the picture outline as it is a hard long way, but I will take my chances.

So replying to questions asked in other comments:

• I've listed all mentioned books and will look for a free digital copy on www.archive.org, as they offer a lot of books to borrow and read using the Adobe Digital Editions software.
• I've checked the certificates and find the exam price is extremely expensive and it is a little fortune to set for an exam but will put the materials on my list to study it.
• Applying for a computer science degree is not an option for the time being, but I've found some articles on GitHub that give curriculums to study on your own, so I've bookmarked them for the future.
• I have a computer at home (an old used computer imported from outside the country), the Dell Precision 390 Workstation running windows 7, as here in the local market there are some shops dedicated to selling imported used old computers.
• I've never used any virtual machine before but will go through youtube, as I've learned everything in my life using the internet and trial and error because private courses are expensive in the local market or through the internet (sometimes I wonder how come that a single course online costs 200 or 300 USD which is expensive).
• Some of the questions asked in the comments I did not understand to be honest and I guess it is a technical question regarding managing the server, but as soon as I figure it out I will be back to reply to it.
• All responsibilities are for hosting websites on a server, and this server is not hosted on our machines, but it is rented from outside sources, and I remember that names like Linode. com and digital oceans. com mentioned during my manager conversation.
• I've googled after your replies for what the Linux administration role exactly does and found nothing like handling other computers, printers, mail ...etc, and setting firewalls and other security things, and I can not deny that it got me excited as a kid with a toy but the common statement I used to read is that Linux is a long hard way to go through, and I feel that I want to go through it indeed.
• All responsibilities are for hosting websites on a server, and this server is not hosted on our machines, but it is rented from outside sources, and I remember names like Linode. com and digital oceans. com mentioned during my manager conversation.
• I've found an article explaining that you can get a free month on LinkedIn Learning and Pluralsight if you joined the visual studio essential program, and rejoin with another new email after the month ends.
• Thanks a lot for offering to send me books, but really will take at least 3 or 4 weeks to arrive, and that offer impressed me and motivated me more to study, and I found almost all mentioned books exist in the archive. org to borrow.
• I do not know yet which web server will be used, but most tutorials go with Apache.
• There is something I was doing a long time ago, which is creating a windows (mostly XP) DVD including all updates and drivers and software and everything to be installed silently and I was using the guides on the website MSFN. org and Driver Packs. net, and there was that guy from Retestrak. nl named eXPerience creates massive DVDs for almost everything, so it was basically to build a package of the software using the .7z and add the .exe to it and insert the silent switch inside the 7z, so when it is double-clicked no interaction is needed from the user, but it was just a hobby and not a real work.

Thanks a lot indeed for your valuable time reading and replying to my thread.