The very first steps after S4 HANA installation

Client copy. 

I am not sure, but I guess even for training purposes you need to setup new client besides 000 because some actions can not be done there.

So, first create a new line in SCC4

Also you need to create / populate Logical system (SALE--Basic Settings--Logical Systems--Define Logical System)

Then, make copy in SCCLN under user SAP*

When client copy completed, you will see such a picture:

Setup Transport Management System

Enter transaction STMS and confirm default options (under SAP*)

To check TMS system, use SE38 program RSTPTEST

If everything is Ok,you will see the screen with STMS import queue

Import profiles

In RZ10 select Utilites -- Import profiles -- Of active servers

Create basic parameters for default profile that will make it possible to work from the browser

is/HTTP/virt_host_0	s4host.rhel:8075
icm/server_port_0	PROT=HTTP,PORT=8075,TIMEOUT=180,PROCTIMEOUT=600
icm/host_name_full	s4host.rhel
icm/server_port_2	PROT=HTTPS,PORT=8070,TIMEOUT=180,PROCTIMEOUT=120
icm/server_port_1	PROT=SMTP,PORT=25000,TIMEOUT=180,PROCTIMEOUT=120
ms/server_port_0	PROT=HTTP,PORT=8075
is/SMTP/virt_host_0	*:25000

Memory parameters

abap/shared_objects_size_MB	3000
PHYS_MEMSIZE	194555
abap/buffersize	2500000

You can check the result by NWBC link (some SICF nodes might need to activate)

http://s4host.rhel:8075/sap/bc/nwbc/nwbc_launch?sap-client=888

or

http://s4host.rhel:8075/sap/bc/nwbc

Assign the following roles to your user so that the first screen will not be blank

SAP_BPR_INT_SALES_REP_14

SAP_SR_INT_SALES_REP_5

SAP_SR_INT_SALES_REP_6

So, the result is OK

Let's activate Fiori environment

Prerequisites for Fiori 3 System Landscape (details here)

SAP S/4HANA with embedded SAP Fiori front-end server with Installed components 

SAP_UI 754

UIBAS001 500

Will pass steps from note

2834415 - Composite SAP note: Rapid Activation for SAP Fiori in SAP S/4HANA 1909

Run tr. SU25 and select Initially fill the Customer Tables point with default option

After that I've activated all regarding the article 

https://blogs.sap.com/2020/05/25/new-installation-of-s-4hana-1909fps2-part-4-rapid-activation-for-fiori/