Internet configuration after a fresh installation: dynamic IP problems

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https://bbs.archlinux.org – Hello Arch Linux community,After usage of Ubuntu, I decided to move to Arch Linux because of its highly-customizable and flexible operating system. To learn first the installation process, I created a virtual OS in Oracle VM VirtualBox. The installation went well till I encountered the network configuration step. It should be noted that the internet worked fine in terminal when it was not installed and it was used from a disk image. Therefore, my installation ended here and I cannot progress. Tried many ways found on Arch's wiki and googled, but still no Internet found in the Arch Linux.F (HowTos)