Hello yesterday you bought a 951ui-2hd router. I’ve seen a lot of videos and read a lot of articles, but I’ll need extra help too! 
My first task is to access It from an external network! pic
Some guidance?
That question is about to set a dmz or port forwarding in the TP link or what is your main router. Nothing with relation to mikrotik at all.
Thank you!
Later I will try and write!
Okey its Done, Thanks!
Next question!
Will I be able to build a VPN between my Mikrotik in DMZ and another Mikrotik at another distant point?
I found this https://www.youtube.com/watch?v=oR4G6SZ3LcM material that pretty well explains network building and settings. If I take it as an example if it will get in my scenarios, or additional settings will be required?
Generally yes. I cannot see the video on my mobile phone so I cannot say how much it is relevant.
Okey now i try Open VPN !
I use this article http://paulswasteland.blogspot.bg/2015/05/site-to-site-openvpn-using-mikrotik.html but the client side has error - termination-TLS failed but on the server side TPC connection estabilished from …
1 - I synchronized the time
2 - I executed the following scripts on the server router (192.168.0.0/24 → with DHCP Server)
/certificate add name=ca-template common-name=myCa key-usage=key-cert-sign,crl-sign
/certificate add name=server-template common-name=server
/certificate add name=client1-template common-name=client1
/certificate sign ca-template ca-crl-host=192.168.0.1 name=myCa
/certificate sign ca=myCa server-template name=server
/certificate sign ca=myCa client1-template name=client1
/certificate set myCa trusted=yes
/certificate set server trusted=yes
/certificate export-certificate myCa
/certificate export-certificate client1 export-passphrase=xxxxxxxx
3- I copied myCA.crt and client1.crt files and imported them into System-> certificates import in the client site!
4-I set up the server configuration in the way shown in the article.
5-I made the client setup the same way as the example.
6 - Ip-> Routes I created the destination in server ip-192.168.2.0/24 (where is my DHCP server) and the gateway → real ip of the client.
Ip->Routes I created the destination in client ip-192.168.0.0/24 (where is my DHCP server) and gateway → real ip of the server.
7-I rebooted both routers!
Where is the problem?
Okey the connection is success! Now the problem is the speed. The transfer betwen to computers is 280kb???
Now set up SSTP to try and the same situation. 280kb… https://www.youtube.com/watch?v=DmfN8HMJ06I
Try l2tp which runs in udp instead the sstp or openvpn that uses tcp.
ohhh the problem was complex… Slow internet upload from 1 side and external usb Lan modul with virtual machine in the other side…!
Naw I brought out in physical environment and the everething is normal 3.5MB!
My next step is to connect new PC with OPENVPN soft!
On the Scheme you can see I havent ping between PC2 and PC3!
Can anyone explain how to build this network successfully?